10 Questions to Ask Your Window and Door Suppliers Before Purchase

June 24, 2025
A World of Windows employee assembling a uPVC window frame.

10 Essential Questions to Ask Your Window and Door Supplier

When it comes to purchasing new windows or doors for your home, it's essential to make informed decisions. With so many options available, how do you know which window & door supplier and manufacturer will provide the best products and service? Asking the right questions can save you time, money, and potential headaches down the line.

Here, we’ll guide you through the 10 essential questions you should ask your window and door suppliers before making a purchase. Let’s dive into what you need to know to ensure you’re getting the best products for your home.

1. What Types of Windows and Doors Do You Offer?

When it comes to selecting windows and doors, the variety of materials and styles available can be overwhelming. Ensure your supplier offers the options that suit your needs.

Materials Available (uPVC, Aluminium, Composite)

Different materials offer distinct advantages. For instance, uPVC windows are highly durable and energy-efficient, while aluminium windows provide a sleek, modern look and are known for their strength. At World of Windows, we manufacture aluminium windows and uPVC windows to give you a broad range of styles and finishes.

Styles and Designs

Whether you’re looking for double glazed windows to reduce energy costs or bay windows to add a touch of character to your living room, the design of your windows should complement your home's architecture. World of Windows offers various window styles, including tilt and turn windows, bay windows, and French doors to suit every taste and requirement.

2. What Is the Warranty on the Products?

A solid warranty can provide peace of mind. Ask your supplier about the length and scope of their warranty.

Warranty Period

World of Windows offers comprehensive warranties on all our products, ensuring that your investment is protected for years to come. Be sure to ask about what’s covered, whether it’s just the materials or if it also includes the installation.

Transferability

Find out if the warranty is transferable if you sell your home. This could add value to your property in the long run.

3. Are Your Products Energy-Efficient?

Energy efficiency is one of the most important factors to consider when purchasing windows and doors. Ask your supplier about the energy ratings of the products they offer.

Energy Ratings and Efficiency Standards

Look for products with excellent energy ratings, such as double glazing windows. These windows reduce heat loss and improve your home's overall energy efficiency. At World of Windows, we pride ourselves on offering energy-efficient solutions that help lower heating costs and create a more comfortable living space.

4. Can You Provide Installation Services?

Professional installation is crucial for the longevity and performance of your windows and doors. Many suppliers offer installation services, so it's essential to ask.

Do You Offer Professional Installation?

At World of Windows, we provide expert installation for all of our products, ensuring your windows and doors are fitted to the highest standards. A professional installation is key to maximising the performance and lifespan of your new windows and doors.

What Are the Installation Costs?

Be sure to ask about installation costs upfront. Some suppliers may offer free installation with certain products, while others might charge extra.

5. What Is the Lead Time for Delivery and Installation?

Knowing how long it will take to receive and install your windows or doors is essential, especially if you're on a tight schedule.

Timeframe for Custom Orders

If you're opting for custom-made products, such as bifold doors or patio doors, ask your supplier about lead times. Custom products might take longer to manufacture and deliver, so it's important to plan accordingly.

How Delays Are Handled

Inquire about the process in case of any delays. A reputable supplier like World of Windows will keep you informed every step of the way and work to ensure your windows and doors arrive and are installed on time.

6. Can You Provide References or Reviews?

A reliable window and door supplier will have a track record of satisfied customers. Asking for references or checking online reviews can help you gauge the quality of service and products.

Testimonials and Case Studies

World of Windows is proud of our reputation for exceptional service. We encourage you to check our reviews and ask for references from previous customers.

Online Reviews and Reputation

Search online for reviews of your chosen supplier. A company with a solid reputation and positive feedback from customers is more likely to deliver quality products and services.

7. What Is the Total Cost of the Project?

Understanding the total cost of your project is crucial before committing to any purchase. Be sure to ask for a full breakdown of costs.

Breakdown of Costs

Ensure you understand what’s included in the price, such as the cost of the windows, doors, installation, and any additional services. With World of Windows, we provide clear and transparent pricing with no hidden fees.

Payment Plans and Financing Options

Ask if the supplier offers flexible payment options or financing plans to help manage the cost of your purchase.

8. What Safety Standards Do You Adhere To?

Safety should always be a priority when selecting windows and doors. Ask your supplier about the safety features of their products.

Compliance with Local Building Codes

Make sure the products you’re purchasing meet local building regulations. World of Windows ensures all our products adhere to UK safety and building standards.

Safety Features of the Products

Many windows and doors come with enhanced security features, such as shatterproof glass or multi-locking mechanisms. Be sure to ask about these features for added peace of mind.

9. Do You Offer Customisation Options?

If you're looking for a unique look or specific functionality, customisation might be necessary.

Custom Sizes and Designs

Whether you’re interested in bifold doors or tilt and turn windows, be sure to ask if the supplier offers customisation options. World of Windows offers bespoke solutions tailored to your home’s needs.

Special Features (Noise Reduction, Extra Insulation)

Ask if they offer any additional features, such as noise-reducing glass or extra insulation. These features can make a significant difference in your home’s comfort.

10. What Is the Process for Maintenance and Care?

Proper care and maintenance are essential for keeping your windows and doors looking great and functioning well for years.

Maintenance Requirements

Different materials require different levels of care. For example, uPVC windows are relatively low-maintenance, while aluminium windows might need occasional cleaning. Ask your supplier for maintenance guidelines.

Cleaning and Upkeep

Ask about the best practices for cleaning and maintaining your windows and doors to ensure they stay in top condition.

Get in Touch with World of Windows Today - Your Specialist Window & Door Suppliers in The West Midlands

Choosing the right windows and doors for your home is a big decision, and asking the right questions is essential to making an informed choice. If you’re ready to explore high-quality windows and doors from trusted window manufacturers and door suppliers, get in touch with World of Windows today. Our range of uPVC windows, aluminium windows, patio doors, bifold doors, and more is designed to suit every style and need. We also offer expert installation services to ensure your new windows and doors are fitted perfectly. Contact us for a free consultation and let us help you find the perfect solutions for your home!

10 Questions to Ask Your Window and Door Suppliers Before Purchase

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Based in Dudley, World of Windows Ltd, is the trusted business for window, door, and conservatory installations across Dudley, Stourbridge, Hagley, Brierley Hill, Halesowen and beyond. For a free, no-obligation quote, get in touch with us today.

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